Binding post



Oct." 18, 1927- J. J. CROSBY BINDING POST Filed Jan. 15, 1927 INVENTOR.J07) J'feway M ATTORNEY.

Patented Oct. 18 1927.

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' 'Applicatiol'rliilediifannary 15,'I9 27.'i- Senia1 No.3 161,256.

My invention relates to an improved bind- .ing Post; andis intended.-par.t-1cularly 2101 use in radio construction wherein a smallinexpensi.ve,:- easily: adjustable, spring controlled, positively actingbinding post structure is needed, though obviously my improvement iscapable of use in other connections wherein the same may beadvantageously employed.

My invention is designed to provide abinding post which is simple andinexpensive, 'which is so constructed as to firmly grip and hold aconductor engaged therewith securely in place; which is sprlng actuated;which is readily accessible for easy adjustment to vary the springtension; and the moving parts of which are entirely concealed andprotected.

Other objects and advantages of my improvement will more fully appearfrom the following description, appended claims, and accompanyingdrawing wherein a preferred embodiment illustrating my lnventlon isshown.

In the drawing:

Fig. 1 is a perspective of a radio cabinet showing my improved inventionin use there- 1n.

Fig. 2 is a broken away vertical crosssectional view through myimprovement showing a part thereof in elevation.

Fig. 3 is a view similar to that of Fig. 2 except that in Fig. 3 theelectric conductor is attached to the binding post.

Fig. 4 is a plan of the structure exhiblted in Fig. 3.

In the drawing let 10 indicate a base to which my improved binding postis attached.

The post is indicated in assembly as 12 and Y the conductor attachedthereto as 14. The post body is here shown as secured to the base by ascrew 16. The body structure comprises a portion 18 of enlarged diameterwhich is internally threaded to receive the screw 16 to secure thebinding post in place and a portion 20 of reduced diameter which isexternally threaded at 22 and which terminates in a portion 24 of adiameter reduced below that of portion 20. The portion 24 has, inproximity to its end, an aperture 26 adapted to receive an electricalconductor such as 14.

Mounted upon the post is a spring actuated sleeve, indicated in assemblyas 28,

.whiclhholdsitheconductor securely in place iinnthe.apcntureQG of thepost.

. E'The sleeve-comprises acpairbf telescopic sectionsaanalesection 30externally threadt ed to be received within a female section 32, bothsections being apertured to be received over the post, the male sectionbeing provided with an aperture adapted to be received over the enlargedportion 20 of the post. A nut 34 is threaded on the portion 22 of thepost and a spring 36 is mounted upon the post within the sleeve, havingone end bearing against the nut 34 and the opposite end against the endof the sleeve to urge the sleeve outwardly to hold the conductor 14 inplace in the aperture in the post. Through adjustmentof the nut 34 it isreadily possible to regulate the tension of the spring 36. The nut 34forms a stop as shown in Fig. 2 when engaged by the inturned portion ofthe sect1on30.

My invention is so constructed as to be readily adaptable for use inthat it is relatively simple to push back the spring actuated sleeve andinsert the conductor in the aperture of the post. Moving parts of themechanism are completely concealed. The nut within the sleeve serves asan abutment to engage the post as shown in Fig. 1 and is capable oradjustment to regulate the tension on the spring as heretoforedescribed.

What I claim is:

1. In a binding post, a stationary post member provided with an openingfor a conductor, a sleeve comprising a pair of threadedly connectedsections slidably mounted upon said stationary post member, a partadjustable upon the post within said sleeve, and a spring within thesleeve engaging said part and acting upon the sleeve to hold the same tosecurely grip the conductor between the sleeve and the post.

2. In a binding post, a stationary post member provided with an apertureat one end to receive a conductor and a threaded.

portion intermediate its ends, a sleeve slidably mounted upon thestationary post member surrounding the threaded portion thereof, saidsleeve comprising a. pair of threadedly connected apertured cupsections, a nut adjustably threaded upon the post within the sleeve, aspring'within the sleeve surrounding the post engaging said nut andsleeve to act upon the sleeve to hold it outwardly toward the end of thepost, said nut adapted to serve as a stop to prevent receivable over theapertured end portion of the post, a nut adjustably threaded upon thethreaded portion of the post within the sleeve, a spring within thesleeve encircling the post between the nut and the end of the sleeve tohold the sleeve outwardly, a conductor within the aperture of. the postheld by the sleeve securely therein, said nut being adjustable to varythe tension on said spring and the two sections of said sleeve beingrelatively adjustable to vary the tension on said spring.

In testimony whereof, I, JOHN J. GRosBY, sign this specification.

JOHN J. CROSBY.

